--- lib/Biber/Output/base.pm
+++ lib/Biber/Output/base.pm	2013-08-08 09:42:55.189939067 +0000
@@ -5,6 +5,7 @@ use warnings;
 
 use Biber::Entry;
 use IO::File;
+use PerlIO::encoding;
 use Text::Wrap;
 $Text::Wrap::columns = 80;
 use Log::Log4perl qw( :no_extra_logdie_message );
--- lib/Biber/Output/bbl.pm
+++ lib/Biber/Output/bbl.pm	2013-08-08 09:43:01.225438687 +0000
@@ -10,6 +10,7 @@ use Biber::Entry;
 use Biber::Utils;
 use List::AllUtils qw( :all );
 use IO::File;
+use PerlIO::encoding;
 use Log::Log4perl qw( :no_extra_logdie_message );
 use Text::Wrap;
 $Text::Wrap::columns = 80;
--- lib/Biber/Output/dot.pm
+++ lib/Biber/Output/dot.pm	2013-08-08 09:43:06.605439073 +0000
@@ -10,6 +10,7 @@ use Biber::Entry;
 use Biber::Utils;
 use List::AllUtils qw( :all );
 use IO::File;
+use PerlIO::encoding;
 use Log::Log4perl qw( :no_extra_logdie_message );
 my $logger = Log::Log4perl::get_logger('main');